Abstract
One of the most accurate and commonly accepted methods for spectral analysis, i.e., estimation of frequency from samples of a signal, is analytical leakage compensation, briefly called analytical solution (AS). The AS estimate is negligibly biased, but it is the whole class of solutions whose variance depends on a free parameter named K. Thus, an important step in AS algorithm is calculation of optimal Kopt, which selects the minimum variance solution from theoretically infinite set. The original paper provides complete set of needed formulae, and here a few other relations are discussed, which can be used to further reduce the variance, if properly applied according to the specified criterion.
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